Have you tried getting a new RCM to see if that resolved the issue? You can try https://www.lllparts.co.uk/en/ and use the SLK 320 to see if you can get the RCM from that site.

 

Does the fan run when the key is out of the ignition.
Does it ever stop, if so how do you stop it?
Does it only run when the engine is started?
Does it stop with the Air Conditioning OFF?
You need to give more details.

 

thanks mariontr for the link, unfortunately it seems no RCM to sell there.

onehundread80 I try to answer
the fan start only when the engine is turned on, the AC is OFF and when I turned off the engine the fan turns off. no lights ON in the car. we also changed the Conditioning control module but nothing.

I can add some info more, for example I had a problem with a battery drain, a battery Bosch 2 years old but used really a little. then the fuel door was blocked and the mechanic needed to unblock. then the problem with the fan.
I read all the topics about this issue, in one of them someone unplug the positive pin of the battery for a couple of hours and this reset the fan. I don't know if it works, I didn't try it yet.

I love the Crossfire but I had really a lot of problems, all electrician problems and here in Rome it is really hard find someone who knows where to put his hands, Once I brought the car to the offial chrysler where the car was bought and they asked me around 700€ without fix my problem, better, the same problem appear again 2 months later.

I'm a bit embittered, thanks for all your help

 

1) The Crossfire is not a Chrysler product, even tho it says CHRYSLER on the trunk, there is no factory support for the Crossfire - dealers cannot help you.

2) A fan that runs at high speed with the key 'ON' with a starter that wont engage is an almost SURE SIGN of a bad RCM. I am very certain your RCM is at fault here.

 

TomBishop, try the following link: https://www.lllparts.co.uk/category/...ch/A1705450305, looks like $183.00 Euro for the RCM.

 

That’s not what my granddaughter said. 😉

 

Before to buy a new RCM I need to be sure about it.
The starter engage, the car works just the fan never stop.
I read a lot of things also about the connection between PCTM and FCM, there is something I can do there?

 

Probably he hadn't a Crossfire here and he found a lot of Ferrari on the streets!

 

It's easy to check the rcm relays. Just remove it and remove the cover.

 

This is not the RCM. This is a bad FCM. If the key is off, the line with YELLOW arrow must go to zero volts, if it goes to zero volts, the FCM must turn fan off, if it does not, the FCM is bad.
Pin 6 is the enable line, the FCM must never operate the fan motor unless that line is high (over 5 to 6 volts).

 

Gotcha, but I think everyone is responding to two different posts and issues caused by posting on someone else thread. One is a no start issue thus the title of the thread and the other is another poster with a fan issue.

 

thanks Pizzaguy, I'm scared about thinking to explaine it to the mechanic.
if I can add an info, the car blows hot air inside with air turned off, I don't know if it could be the cause, the result or just it is a trouble more.

 

If the blower in the heat/air conditioner runs all the time, it is usually a bad "blower resistor" and is an EASY fix.

You should order the part for the Mercedes 2003 SLK320 as it is easier to find than when you search "Chrysler Crossfire" - it is the same part
https://www.carparts.com/details/Mer...0&gclsrc=3p.ds

 

Folks, DJ, has repaired/refurbished my RCM and has mailed it back to me. My RCM per DJ had bad relays for the Engine and Horn, so hopefully when I get it back and reinstall it resolves all my no start issue